function uuidv4() {
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
        .replace(/[xy]/g, (c) => {
            var r = Math.random() * 16 | 0,
                v = c === 'x' ? r : ((r & 0x3) | 0x8);
            return v.toString(16);
        });
}

export default uuidv4;